Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #0: This report supersedes any earlier reports of this event. This is a computer-generated message. This event has not yet been reviewed by a seismologist.
A micro earthquake occurred at 2:56:35 AM (PDT) on Saturday, October 18, 2025.
The magnitude 1.0 event occurred 4 km (3 miles) NNE (33 degrees) of Larkfield-Wikiup, CA.
The hypocentral depth is 6 km ( 4 miles).
| Magnitude | 1.0 - duration magnitude (Md) |
| Time | Saturday, October 18, 2025 at 2:56:35 AM (PDT) Saturday, October 18, 2025 at 9:56:35 (UTC) |
| Distance from |
Larkfield-Wikiup, CA - 4 km (3 miles) NNE (33 degrees) Windsor, CA - 8 km (5 miles) E (90 degrees) Santa Rosa, CA - 11 km (7 miles) N (352 degrees) Calistoga, CA - 13 km (8 miles) WSW (254 degrees) Roseland, CA - 14 km (9 miles) N (2 degrees) |
| Coordinates | 38 deg. 32.8 min. N (38.547N), 122 deg. 43.4 min. W (122.723W) |
| Depth | 6.48 km (4.00 miles) |
| Quality | Poor |
| Location Quality Parameters | Nst=9, Nph=8, Dmin=23.0 km, Rmss=0.16 sec, Erho=3.98 km, Erzz=7.44999981 km, Gp=187 degrees |
| Event ID# | nc75251001 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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